PowerConnect 2816 Guest VLAN for WiFi Internet Access

I have an old PC2816 running that I wish to use to set up a guest network on Port 2.

All other ports are used for home networking (so all devices see each other). The addresses are 192.168.2.x

The idea is to connect a cheap WiFi router (which can provide DHCP addresses on a different subnet - say 192.168.3.x) on port 2, and create a WiFi guest subnet with internet access only. They should not be allowed to view devices on the 192.168.2.x subnet.

The manual on page 94 says:

Guest VLANs — Provides limited network access to unauthorized ports. If a port is denied network access via port-based authorization, but the Guest VLAN is enabled, the port receives limited network access. For example, a network administrator can use Guest VLANs to deny network access via port-based authentication, but grant Internet access to unauthorized users.

I have absolutely no idea how to configure the VLAN / Guest VLAN features of the PC2816 to this end.

Can my goal even be implemented with the hardware that I have? If so, how do I proceed (configure) the PC2816 to attain this? Any pointers or suggestions are very much appreciated.

Thanks!